Close file stream after YAML serialization.

[djanjic]

After getting a file, metadata file stream is still open. This commit fixes that.

[djanjic]

This pull request solves same problem

#61

[pickhardt]

Hi @perakojot,

Thanks for the pull request!

I can merge it in if you do two things first:

1. You don't really have to do this, but if it's easy for you, can you add a space between the last parentheses and the last curly bracket? So it's File.open(File.join(obj_root,"metadata")) { |file| YAML::load(file) } If you don't want to go back to your code for such a small change, no worries, I can merge the PR and change it later myself.

2. We have a contributor license agreement (CLA) based off of Google and Apache's CLA. If you would feel comfortable contributing to, say, Angular.js, you should feel comfortable with this CLA.

Go here to sign the CLA: https://docs.google.com/forms/d/e/1FAIpQLSeKKSKNNz5ji1fd5bbu5RaGFbhD45zEaCnAjzBZPpzOaXQsvQ/viewform

Thanks a lot, and if you do those I promise I'll get to merging it in!

[djanjic]

1. Done
2. Done

[pickhardt]

Thanks!